90897132 has 12 divisors (see below), whose sum is σ = 212093336. Its totient is φ = 30299040.

The previous prime is 90897109. The next prime is 90897139. The reversal of 90897132 is 23179809.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (90897139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787369 + ... + 3787392.

Almost surely, 2^90897132 is an apocalyptic number.

It is an amenable number.

90897132 is an abundant number, since it is smaller than the sum of its proper divisors (121196204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90897132 is a wasteful number, since it uses less digits than its factorization.

90897132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574768 (or 7574766 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 90897132 is about 9533.9987413467. The cubic root of 90897132 is about 449.6245955546.

The spelling of 90897132 in words is "ninety million, eight hundred ninety-seven thousand, one hundred thirty-two".